Rotary planer.



No. 784,157. PATENTED MAR. '7, 1905. W. J. HAGMAN.

ROTARY PLANER.

APPLICATION FILED 1330.27. 1904.

2 SHEETS-SHEET l.

Witnesses: Inventor W ovz, MMEW Y" Attorney No. 784,157. PATENTED MAR. '7, 1905.

W. J. HAGMAN.

ROTARY PLANER.

APPLIOATION FILED 1330.27, 1904.

ZSHBET-SHEET 2.

Witnes ses: Inventor WW W1 Attorney nirrnn Stains Patented March 7, 1905,

Parent N ILES-BEMENT-PON D COMPANY,

OF JERSEY UlflY, NEW JERQEY.

ROI Amt l LihNkll li SPECIFICATION forming part of Letters Patent No. 78%,157, dated March '7, 1905.

Application filed December 27, 1904. Serial No. 238,321.

To all whom, it may concern:

Be it known that I, WILLIAM J. HAGMAN, a citizen of the United States, residing at Philadelphia, Philadelphia county, Pennsylvania,

(post-oifice address, care Bement, Miles A; Company, Philadelphia, Pennsylvania,) have invented certain new and useful Improvements in Rotary Planers, of which the following is a specification.

The so-called rotary planer involves a large rotating disk cutter arranged to act on work having a relative motion of advance past the cutter in a path at right angles to the axis of the cutter and having also relative motion 1 5 of feeding or adjustment in a path parallel with the axis of the cutter. Such machines are really large milling -inachines; but the trade has appropriated to them the term ro tary planers without, so far as] know, having defined or being able to deline the exact distinction between the two classes of machines.

.In the rotary planing-machine as generally constructed a saddle feeds longitudinally upon a bed, and the head-stock carrying the cutter adjusts in the saddle transversely of the bed. The cutter-wheels are large, often several feet in dian'ieter, and the work done by them is of heavy character and the axial strains upon the cutterare consequently great. These strains, acting on the face of the cutter-wheel, tend to buckle the wheel or throw it into a plane not at right angles to the axis of the spindle, and it has been sought to remedy this defect by 3 5 providing the head-stock or saddle with adjustable thrust-shoes engaging the rear of the cutter-wheel. Such thrust-shoes become efficient only as regards strains applied at points pretty well up on the face of the wheel. In 40 these machines much of the heaviest work is done at the lower portion of the wheel below the level of the saddle; and it isthe purpose of my presentimprovement to provide a thrust device at the lower portion of the cutter-Wheel at a point below the saddle and to impose the strain of the thrust at this point directly upon the bed.

My invention will be readily understood from the following description, taken in connection with the accompanying drawings, in 5 which-- Figure 1 an elevation of a rotary planer exemplifying my invention, the view being toward the face of the cutter-wheel, a portion of which is broken away; and Fig. 2 an elevationof the same, the view being toward the edge of the cutter-wheel, the bed appearing in vertical transverse section and a portion of the thrust-bracket appearing in vertical section.

In the drawings, 1 indicates the bed; 2, the saddle, sliding longitudinally thereon; 3, the feed device, illustrated as a screw, for moving the saddle upon the bed; 4-,, the head-stock, mounted to slide in the saddle in a direction 6 5 transverse to the length of the bed; 5, the ad justing device, illustrated as a screw, for adjusting the head-stock in the saddle; (3, the spindle of the cutter-wheel, journaled in the head-stock; 7, the cutter-wheel; 8, thedriving- 7 shaft for giving rotation to the cutter-wheel, and 9 the driving-gear on the driving-shaft, through which motion is imparted to the d riving-shaft.

All of the parts thus far referred to are of usual construction and subject to usual or proper variations.

Proceeding with the drawings, 10 indicates a guide-surface extending along the face of the bed at a level corresponding with the lower portion of the cutter wheel; 11, a thrustbracket arranged to slide along the bed in unison with the saddle and havinga rear hearing against the guide-surface 10, this thrustloracket being conveniently mounted by being 5 secured to a portion of the saddle overhang ing the front of the bed; 12, a threaded stein mounted for in-and-out movement in a bearing in thrust-bracket 11,13, a thrust-shoe upon the front end of this bed, its face engaging a bearingsurface upon the rear of the cutter-wheel; 14-, a worm-wheel pocketed in the thrust-bracket and threaded upon the stem of the thrust-shoe in such manner that the turning of the worm-wheel will adjust the shoe to and from the guide-surface 10 on the bed; 15, a worm pocketed in the thrustbracket and engaging the worm-wheel; 1.6, a

worm-shaft to serve in rotating the worm; 17. a horn projecting forwardly from the thrust-bracket below the thrust-shoe, and 18 lips upon the end of the thrust-shoe engaging the side of the horn and preventing endwise movement of the thrust-shoe under the urgcncy of the drag of the cutter-wheel upon it as the cutter-wheel turns while in contact with the face of the thrust-shoe.

The cutter-wheel having been accurately adjusted forwardly to suit the desired depth of cut to be taken by cutters projecting from its face, the worm-shaft is properly turned to carry the thrust-shoe 13 outwardly until its face takes a fair bearing against the rear of the cutter-wheel. Under these conditions the rearward strain at the lower portion of the cutter-wheel becomes imposed upon the face of the thrust-shoe and is transmitted through its stem and the worm-wheel to the thrustbracketand finally reaches and is met by the guide-surface 10 of the bed, and this condition of the parts in meeting the thrust obtains wherever the saddle may be shifted upon the bed and while the saddle is making its feed-' ing traverse upon the bed. The strains due to the friction between the rotating cutterwheel and the thrust-shoe tend to drag the thrust-shoe endwise and bring a deflecting strain upon the stem of the thrust-shoe, the deflecting effect of such strains being avoided by the shoulder engagement formed by the lips 18 of the thrust-shoe engaging the horn of the tln'ust-bracket. The engagement be tween the thrust-shoe and the horn also prevents the rotation of the thrust-shoe and its stem as the worm-wheel is being turned.

It is to be understood, of course, that the particular details of construction for adjusting the thrustshoe are merely exemplifying in character, though I may add that they constitute the best mode in which I at present contemplate applying my invention.

I claim as my invention 1. In a rotary planer, the combination, substantially as set forth, with a bed having a front guide-surface, a saddle mounted to slide upon the bed, a spindle supported by the carriage above and at right angles to the bed, and a cutter-wheel carried by the spindle, of a thrust-shoe having its face bearing against the lower portion of the rear face of the cutter -wheel, and parts connected with said thrust-shoe to the rear thereof and abutting against said guide-surface on the bed.

2. In a rotary planer, the combination, substantially as set forth, with a bed having a front guide-surface, a saddle mounted to slide upon the bed, a spindle supported by the carriage above and at right angles to the bed, and a cutter-wheel carried by the spindle, of a thrust-shoe having its face bearing against the lower portion of the rear face of the cutter-wheel, parts connected with said thrustshoe to the rear thereof and abutting against said guide-surface on the bed, and means for adjusting the distance between said guidesurface on the bed and the front ends of said thrust-shoe.

3. In a rotary planer, the combination, substantially as set forth, with a bed having a front guide-surface, a saddle mounted to slide upon the bed, a spindle supported by the carriage above and at right angles to the bed, and a cutter-wheel carried by the spindle, of a thrustshoe having its face bearing against the lower portion of the rear face of the cutter-wheel, and parts supported by the saddle and connected with said thrust-shoe to the rear thereof and abutting against said guide-surface on the bec.

4C. In a rotary planer, the combination,'sul stantially as set forth, with a bed havingafront guide-surface, a saddle mounted to slide upon the bed, a spindle supported by the carriage l above and at right angles to the bed, and a cutter-wheel carried by the spindle,'of a thrustshoe having its face bearing against the lower portion of the rear face of the cutter-wheel, a bracket supported by the saddle between the bed and the cutter-wheel, and parts upon the said bracket and connected with said thrustshoe to the rear thereof and abutting against said guide-surface on the bed.

5. In a rotary planer, the combination, substantially as set forth, with a bed having a front guide-surface, asaddle mounted to slide upon the bed, a spindle supported by the carriage above and at right angles to the bed, and a cutter-wheel carried by the spindle, a bracket supported by the saddle between the bed and the cutteravheel and having a bearing against said guide-surface on the bed, a thrust-shoe between the bracket and the cutterwheel and having its face bearing against the lower portion of the rear face of the cutter-wheel, a threaded stem rearwardly projecting from the thrust-shoe into the bracket, a worm-wheel mounted in the bracket and threaded upon said stem, a worm mounted in the bracket and engaging said worm-wheel, and a shaft for turning the-worm.

6. In a rotary planer, the combination, substantially as set forth, with a bed having a front guide-surface, a saddle mounted to slide upon the bed, a spindle supported by the carriage above and at right angles to the bed, and a cutter-wheel carried by the spindle, a bracket supported by the saddle between the cutter-wheel and the bed and having a bearing against said guide-surface on the bed, a thrust-shoe supported by the bracket and having its face bearing against the lower portion of the rear face of the cutter-wheel, a horn projecting forwardly from the bracket and engaging under the thrust-shoe, and means carried by the bracket for ad justingthe distance between said guide-surface on the bed and the front face of l said thrust-shoe.

7. In a rotary planer, the combination, subshoe, means carried by the bracket for adjusting the distance between said guide-surface on the bed and the front face of said thrust-shoe, and a shouldered engagement between said thrust-shoe and horn for resisting the endwise thrust upon the thrust-shoe as imposed by the rotation of the cutter-wheel.

l VILLIAM J. HAGMAN.

VVitn esses:

Gno. T Ruiss, W. B. PAGE. 

